<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>404 - 答题系统</title>
    <style>
        body {
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #000;
            color: #fff;
            font-family: Arial, sans-serif;
        }

        video {
            max-width: 100%;
            max-height: 100%;
        }
    </style>
</head>

<body>
    <video controls autoplay playsinline style="width: 100%; height: 100%;" muted>
        <source src="/404-video" type="video/mp4">
        您的浏览器不支持视频播放。
    </video>
</body>

</html>